Liquid pump



Jul 1, 1930. 1 RKRAUSE' I 1,768,773

LIQUID PUMP Filed July 27, 1928 Zjvwenkoz w R401. ffk/q 06E.

Patented July 1, 1930 UNITED STATES PATENTo FIcr:

PAUL mimosa; or BABYLON, NEW YORK, nssrenon, BY manor AND MESNE AssIeN MEN'I'S, OF ONE-THIRD TO WILLIAM TAYLOR, BOTH OF BABYLON, NEW YORK E. SPRAGUE AND ONE-THIRD TO HARRY LIQUID PUMP Application filed July 27,

This invention relates to automatic liquid pumps and in particular to a pump for dispensing liquid fuel as used at a gasoline lling station.

A particular object'of the invention is to provide a coin controlled mechanism which cooperates with. the mechanism of the pum motor operated mechanism when the dis-- charge of fuel is to be accomplished. I

A still further object of the invention is to provide an automatic pump which is coin controlled and in which is incorporated the mechanism to permit various amounts of fuel to be discharged.

A still further object of the invention is rovideva mechanism which will be of a slmplified nature and which will be used to carryout a variety of motions for per forming the different discharging action, it being also an object to provide in a mechanism of this character which can be placed by the roadside for coin operation without the necessity of an attendant and one which may also be used at a gasoline filling station in the usual manner for manual operation without the necessity of using in connection therewith, coins.

To enable others skilled in the art to fully comprehend the underlying features of my invention that they may embody the same in the various modifications in structure and relation contemplated, a drawing depicting a preferred form has been annexed as a part of this disclosure and in such drawing, similar reference characters denote corresponding parts throughout all the views, of which,

Figure 1 is a. view in elevation the same being taken in section to illustrate the interior working parts of my improved automatic liquid pump.

Figure 2 is an enlarged, fragmentary detail of the rack rod lockin mec anism.

Figure 3 is an enlarge view of thei hose" '1928. Serial 1V0. 285,789.

nozzle, a part thereof being illustrated in section to show a contact swltch.

Figure 4-is a top plan view of the mechanism employed to release the rack locking member.

Figure 5 is an enlarged view in elevation, a part thereof being shown in section illustrating the action of the push button which starts in operation the motor actuated I mechanism. L i

Referring to the drawings in detail, 5 indicates the pump housing which is set up on a suitable base 6 as is well understood, the base 6 being provided with a bore 7 in which is disposed a cylinder 8 in which operates a piston 9' secured at the end ofthe ably of the lift pump type an liquid in from a suitable reservoir 11 which is usually buried inthe ground for safety and which is arranged to contain the liquid piston rods 10. This pum is preferin this instance, gasoline which is to be supplied to motor vehicles and themeasurement of which is desired during the di'spensing thereof. The liquid is drawn in to the cylinder 8 through the medium of the lift piston 9 which contains a suitable one-way valve, .not shown, the use of which, however, is well understood.

The liquid contained in the cylinder 8, upon an upward movement of the piston rod 10, is forced out through the pipe 12 and through the fillin hose 13 and nozzle 14: connected at the en thereof. This nozzle as illustrated in Figure 3 is made of any suitable metal and is secured in any suitable manner to the flexible hose 13. It is preferably'provi'ded with a chamber 15 in which is disposed a contact bar 16, this contact bar closing a circuit between the contacts 17 which are connected by the wires 18 in circuit with a suitable switch 19 positioned interiorly of the casing 5. The circuit formed by the wires 18 also include the spring contact 20 which helps complete the circuit to the motor 21 so that the latter may operate in the well known manner.- The contact strip 16 is secured. to a suitable lever 22 which in turn is pivoted as at 23 to the nozzle 14. This nozzle on its under side also draws the medium ofwhich the nozzle may be hung up on the hook 25 formed on the end a suitable hook lever 26 which is pivoted within the housin 5. The housing 5 is provided with suita le cross bracings 27 and 28 and a bottom 29, the wall also bein arranged to provide ournals for the en 5 of an operatin shaft 30 upon which is slidably mounted a iving pimon 31 and a driving sleeve 32, the latter of which is secured to the drive pulley 33 which, in turn, is operated through the medium of a belt or chain 34 from the motor 21. While it is not illustrated, it is to be understood that the drive ulley 35 of the motor may be provided with a suitable slip clutch which will take up the starting torque to prevent burning out of the motor. he piston rod 10 is connected to the lower end of a rack bar 36 which is provided with the teeth 37 which are arranged to mesh with the teeth of the inion 31 so that the rack will be raised y the motor or by the hand crank 38 secured at the outer end of the shaft 32. The ends of the crank and the pinion 31 are provided with clutch teeth 39 so that when the pinion 31 is moved through the medium of the slide bar 40, it will. en age the teeth on the end of the shaft 32 an the rack will be lifted. In order to move the rack, the shaft rod 40 is moved longitudinally through the medium of the bell crank 41, the shift rod being held in any one of two pgsitions through the medium of the detent In the operation of my device, a coin is inserted in the coin chute 43 and strikes the end of a balanced setting lever 44 to cause the bifurcated end thereof 45 to be drawn upwardly so that the lower projec- .tions 46, see Figure 5, will be placed in alignment with the cam block 47. This cam block operates on a suitable shelf 48 of a casting secured to the side of the casing 5 in any suitable manner, this casting providinga housing 49 through which passes a shaft 50 carrying at its opposite end the cam 47 and the button 51. A suitable spring 52 surrounds the shaft m and normally retains the button 51 in its outward fpositlon, consequently when the end 46 o the lever 44 is in alignment with the cam 47 and the button 51 is pushed in, it causes the forkedend of the lever 44 to be raised until its upper extension 52 contacts with end 53 of a push rod 54. ,This push rod may be disposed in either one of two positions' and releasably held through the medium of a suitable detent 55. When the lever 44 has been moved about its pivot point through the medium of the cam 47, its coin receiving end will press the free end of the lever 41 down, causing the clutch arm 40 to move the pinion 31 into mesh with the flanged the clutch end 39 of the shaft 32. Simultaneous with this movement, a vertical clutch rod 56 is drawn down so that a finger 57 carried thereby engages and closes the contact 20 to complete the circuit formed by the wires 18 to start the motor 21 whereupon the shaft 32 will begin to drive the pinion 31 through the mediumof the connectin member 34 and the rack bar 36 is raise However, before the operation of the motor can be accomplished, it is necessary that the nozzle of'the hose 14 be lifted from the hook 25 and be inserted into the gasoline tank of the car to be refueled. When the nozzle is in proper position, the nozzle lever 22 is depressed thus closing the entire circuit and permitting the motor to operate as before described;

When the extension 52 of the balanced setting lever moves the push rod 54 upward, the upper endof the same operates the wedge lever 56. This wedge lever, as illustrated in Figure 2, carries adjacent one end, a housing- 57 in which is yieldably secured a plunger 58, the lower end of which is forked as at 59 and arranged to operate the wedge 60 which is suitabl pivoted to one of the shaft pieces 27 of the housing 5. The purpose of the wedge 60 is to lock the rack bar 36 so that it will not slide back when once raised to a certain height. This wedge lever 56 at its extreme end engages the trip lever 61 moving the lower edge thereof into the path of an adjustable stop 62 carried on the rack bar- 36. When the rack bar is moving upwardly, consequently the adjustable stop 62 will engage the lower end of the trip lever 61 and will cause the upper end thereof a swing sleeve 66 carried on the clutch rod 56 causing a finger portion 67 thereon to overlie the extreme end 68 of the lever 56. The extension 65 is normally urged against the end 64 of the lever 63 through the medium of a suitable spring 69 secured to said extension 65 so that the portion 67 will not normally overlie the end of the lever 56. The trip lever 61 is provided with a link 70, the end of which is forked and in the forked portion carries an adjustable stop 71, the end of the fork is arranged to pass over a suitable pin 72 carried by the lever 56 so that when the adjustable stop 62 or rack bar 36 come into contact with the lower end of the lever 61, it will continue.

-, released,

the lever 44 has been depressed to a certain point, it permits the coin held on the end, thereof to drop through a suitable opening 73 in the free end of the lever 41 so that the coin could continue into a suitable coin receptacle 74 within. the casing 5. The lever 44 while balanced about its pivot point is heavier at one end than the other so that the end within the coin chute engages the wall of the coin chute and thus the free end of the lever or the forked end is normally positioned at its lowest point of travel. The orked ends thereof prevent. any operation of the parts by depressing of the button 51 unless the coin has been put into the coin chute to place the lever 44 in proper position to be operated upon by the cam 47 The depression of the opposite end of the lever 56 also causes return ofthe clutch rod 54 ble in the drawing. However, the coin chute to its depressed position.

Ifdesired, use may be made of a broad cam 47 and a broad ended lever 41 so that the cam will be in position to operate either one of two levers 44, the second one being directly behind the first and not being visiwill be made in two or more compartments and if a 50 coinpiece were dropped into the second compartment, for instance, it

would operate a lever disposed in align-.

ment with the lever 44 whic in turn would be placed in position the same as has been described for lever 44 to be operated upon by the. cam 47. This lever would in turn operate the push-rod 547A shown on the drawin which coacts with the 'same set of mechanism, previously described, namely a lever 56A, lever 61A, lever 63A and sleeve 66A to perform identically the same function as has been explained in connection with the levers 56, 61, etc.

It is evident, therefore, that if the lower set of mechanism including the levers 56, 61, etc., are not in position to be engaged by the stop 62, the motor will continue opcrating, provided of course, that the lever 22 is held in'its depressed position until the stop engages the uppermost lever 61A at which time the sequence of events will take place as hereinbefore described to cut oil' the drive of the pinion 31 to terminate the pumping operation. i

It is quite evident that the lower trip mechanism may be employed for about 25 for the fuel while the upper mechanism would be employed for 50 worth of fuel. Any number of trip mechanisms might be employed in connection with the 'ump rack and would of course operate in su stantially the same manner as explained for the lower set to dispense any amount of fuel.

The hook lever 26 is provided with a link 75 which has pin and slot connection with and the pump rack will return into positionthrough the force of its own weight.

In order that the hook lever 25 may be maintained in' a neutral position when the hoseend is resting thereon, we have provided a set of levers 77 connected by a link 78, the lower lever of which is arranged to engage a projection 79 carried on the side of the rack bar 36, the latter of which in returning moves through the medium of these levers and links the hook 25 into its normal position so that proper resetting of the mechanism may be accomplished for the next refueling operation. Of course it is to be understood that when the pump is operated by the electric motor, the crank .handle 38 may be removed from the end of the shaft 32. To operate the pump' by hand, the handle 38 is secured to the shaft 32 and the switch 19 is thrown to break the circuit made by the wires 18 to the motor.

In order for the pump to be operated by the crank and'just as an ordinary pump, the

crank handle 38 is attached, the switch 19 is thrown to break the circuit and a suitable key 80 is employed which, when put into the lock 81, is arranged to revolve a' from its neutral position. When the pump is in operation as a hand pump, use may be made of a cover plate 84 whichis swung down into position to cover the slotted entrances to the coin chutes 43. It will be particularly noted that the adjustable member 71 carried in the forked portions of the link mayprovide an adjustment for a point at .which the mechanism may be tripped.

It is quite evident therefore, that I have provided a coin operated gasoline or liquid pump which may be adapted for use by the side of a road at remote points and also one which can be set up at a gasoline filling station and can be operated efficiently by the attendant so that overcharging or giv-L ing away a portion of the liquid free may be prevented.

It is quite evident also that I have provided a'pump which can be operated manually, if desired, andone in which the mechanism is of such a sim lified nature that the pump may be manu. actured at small cost and can be set up in' isolated spots for the convenience of motorists.

It is quite evident also that in a motor operated coin Controlled pump of this character, the labor of filling the gasoline tanks of automobiles is reduced to a minimum, which permits the attendant at a gasoline filling station to supply several customers simultaneously with fuel in view of the fact that a predetermined amount of fuel will be discharged at each operation of the pump at which time it will automatically cease operation.

While I have illustrated and described my invention with some degree of particularity, I realize that in practice various alt'erations therein may be made. I therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated arts without departing from the spirit of the invention or the' scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent'is 1. A liquid pump comprising a casing, a rack bar positioned therein, a pinion for operating t e rack bar to provide a pumping action, a drive shaft, clutch faces on the crating the drive sha ,a coin controlled lever, and a cam for moving said lever to bring said clutch. faces into engagement for action,adri vesha drive shaft and on e inion, means forv on operating, the drivesha a cam" a'eoin ute,- a setti lever having one lend'dis operation of the rackbar, a stop on the rack bar, a control lever engageable by said stop to arrest the operation 0 the rack bar, and

means operated by said coin controlled lever for movi said control lever into stop eng tion.

w 'quid pump comprising a casing, a rack bar positionedtherein, a pinion for operating the rack bar to provide a pumping action, a drive shaft, clutch faces on the drive shaft and onrthe pinion, means for operating the drive shaft, a cam, a coin chute, a leverhaving one and disposed in the chute and ha its opposite end movable irto a path of e cam and means for operating the cam to cause engagement of the 'clutc faces for operation of the rack bar. p

- 8. A. liquid pum com acasing, a rack bar positione therein, a pinion for operating the raelr'bar to cprovide a pumping utch faces on the posed in the 0 ate and having itsopposite end movable into the th of the cam, a clutch lever ble the" setti leverfl andaclntehharoperable for causing enga ement of the clutch faces for o ration of t e rack bar.

4. a liquid pum a drive shaft, a motor for operating sai shaft, a pinion, clutch faces on the shaft and pinion, a lever for moving the inion into operating engagement with t e shaft, means for operatin said lever, a motor circuit, a switch in sai circuit normally open, a rod secured to said levler and a switch closing extension on the ro 5. In a liquid pump having an outlet nozzle, a drive shaft, a motor for operatin said shaft, a pinion,clutch faces on the sha and pinion, a lever'for moving the inion into operating engagement with the s aft, means for o crating said lever, a motor circuit, a switc in sald circuit normally open, a rod secured to said lever, a switch closin extension on the rod and a switch on sai nozzle for completing the motor circuit after said normally 0 n switch has been closed.

6. In a liquid pump having an outlet nozzle, a drive shaft a motor for operatin said shaft, a pinion, clutch faces onthe sha and on the pinion, a lever for moving the pinion into operating engagement with the shaft, a coin controlled mechanism for permitting operation of said lever, a motor circuit, a switch in said circuit normally open,

.a rod secured to said lever, a switch closin extension on the rod and a switch on sai nozzle for completing the motor circuit after said normall open switch has been closed. 7. A liqui pump comprising a casing, a rack bar positioned therem, a. lnion for opcrating t e rack bar to rovi e a pumping action, a drive, shaft, 0 utch faoes'on the drive shaft and on the pinion, a motor for operating the drive shaft, a cam, a coin c ute, a settin lever having one end disposed in the c ute and having its opposite end movable into the ath of the cam, a clutch lever engageable the settin lever and a clutch bar operable the clutc lever for causing en agement o the clutch faces for operating t e rack bar, a motor circuit a switch in said circuit normally open, a rod secured to said clutch lever, a motor circuit, a switch 'in said circuit normally 0 n, a rod secured to said. clutch lever, a.switch closirf extension on the rod.

orpperating the liquid pump havmgan outletnoz- I zle and comprising a casing a rack'bar positioned therein, .a pinion rack bar to rovide' a pum action a drive shaft, 0 utch faces on ggfirive shaft and on the pinion, a motor for operating the, drive shaft, a cam positioned in the easa coin chute a setting lever having one fi 'in the chute and'ha its opposite end-movable into the path of cam,

a clutch lever ble by the lo"! and a clutch barperable the clute lever Tie t o the. clutch faces for operation of the rack bar, a motor circuit, a switch in said circuit normally 0 en, a. rod secured to said clutch lever, a switch closing extension on the rod and a switch on said nozzle for completing the motor circuit after said normally open switch has been closed.

9. In a liquid pump, a pumping member,

means for operating the same, coin-controlled means for permitting operation of said operating means including cooperating setting levers, a cam for operating one 0 said levers, a stopon the pumping member and a trip lever o erable by the stop to con- .trol the output 0 the pumping member.

10. In a liquid pump, a drive shaft, a motor for operating the shaft, a pinion, clutch faces on the shaft and the pinion, a clutch lever for moving the pinion into operating engagement with the shaft, a coin control mechanism including a free lever arrangedto engage said clutch lever and a cam for engaglng one end of said free lever for causin operation of said clutch lever.-

n testimony whereof I aflix m si ature.

' PAUL KRAUSl 5.] 

